What You'll Get
Choose From Three Options
- $116 for one scalp analysis (a $250 value)
- $171 for one scalp analysis and a scalp purification service (a $375 value)
- $216 for one scalp analysis, purification service, and a 30-minute laser treatment (a $475 value)
Hair Growth: It’s Just a Phase
Hair growth patterns change across our bodies, throughout our lives, and from species to species. Check out Groupon’s guide to explore the science behind the strands.
Hair varies in thickness and length across our body, from the head’s massive jungle to the knuckles’ tiny brambles. But regardless of where it is, each strand of hair cycles through three phases: anagen, also known as the active growth phase; catagen, or transitional phase; and telogen, or resting phase. During the growth phase, a new hair shaft sprouts from a follicle as its cells rapidly divide and grow upward, forming tightly packed bundles rich with keratin protein. Next, the transition phase kicks in for about two to three weeks, during which growth stops and the outer root sheath shrinks, anchoring the hair to the follicle as it enters the final phase. At that point, the follicle lies dormant until the hair is shed and the cycle begins again.
Not all hair grows at the same rate. On the scalp, hair grows about 6 inches per year, with each strand spending about two to six years in the active phase. Meanwhile, hair on the arms, legs, eyelids, and eyebrows actively grows for a much shorter period—only about 30–45 days—and spends more time in the resting phase, which is why waxing these areas helps curb unwanted hair growth. Humans need removal methods such as waxing because we don’t shed our hair all at once like other mammals; our hair-growth cycles are random and staggered, whereas other animals’ cycles are mostly synchronized.
The Fine Print
Promotional value expires 120 days after purchase. Amount paid never expires. Limit 1 per person, may buy 1 additional as gift. Valid only for option purchased. Limit 1 per visit. Appointment required. 24-hr cancellation notice required (or $50 fee may apply). Must sign waiver. May be repurchased every 30 days. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.